Abstract: An air flow regulator includes a regulating device, regulating unit, and an operating unit. The regulating device is arranged to an air outlet of an air conditioner for regulating air flow coming out. The regulating unit is arranged to the regulating device for expanding or shut the regulating device. The control unit is arranged to the regulating unit to drive the regulating unit so as to control the regulating device. The regulator is arranged to an air diversion of an air conditioner. Users can control the operating unit to regulate the air flow coming out from the air diversion.

Abstract: A floor water tank filtering device for three-in-one sewers comprises a tank body having a receiving space at an interior thereof; a bottom of the tank body being formed with a drain hole; a filtering grid being installed at the drain hole; a top of the tank body being combined with a cover plate; the filtering grid being combined at an upper side of the drain hole of the tank body; a top of the filtering grid being provided as a supporting point of the cover; and the cover being formed by a plurality of cover plates; the cover plate being located an inner side of a top of the tank body; the cover being supported by the filtering grid so that the plurality of cover plates are formed as a plane to be placed upon a top of the tank body.